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Posted on 10/10/2012 10:41:01 AM PDT by ShadowAce
“Again, a scientist thinking that since an equation comes out right, it must faithfully describe the real world.”
That concept has worked pretty well thus far, methinks.
yes
Might make you rething that.
Nope. Different concept there. Think black holes. If gravity was not faster than light, then light could escape a black hole. At least we'd see the light that is coming around it. Since Black holes eat up all light--including the light that is between the hole and us--that means that gravity is faster than light.
True, but with one exception. Whoever measures the speed of light will always get the exact same value, regardless of the motion of the measurer, or of the light source.
According to Big Al (Einstein, that is) space and time will distort in order to keep that true.
So, for example, different observers might not agree on the time a certain light experiment takes, but they will always agree on the speed of light value itself.
Weird - so weird that Big Al never got a Nobel Prize for his Relativity paper - but many experiments have shown it all to be true.
“Again, a scientist thinking that since an equation comes out right, it must faithfully describe the real world.”
That concept has worked pretty well thus far, methinks.
The irony being we are posting using computers that are built on the foundation of equations that at one time seemed pie in the sky....
There are two reining factors in the belief that the speed of light is an absolute: 1) the state of physics and what we know/understand about friction, gravity and the way that light travels, and 2) the ability to detect and measure anything faster.
Without knowing specifically what they are seeking to measure, it is difficult for physicists to try to detect (much less develop) an instrument that can measure something travelling at greater than the speed of light.
The speed of light is the current state of technology. As soon as we discover dilithium crystals and develop warp engines, the speed of light will be relegated to travel in the slow lane!
(Ok, I’m having a little fun and made that last paragraph up!)
speed of C = speed of A ie:C&A are maintaining the same distance between themselves....B just happen to be between them
Please ping me to aviation and aerospace articles. Thank you.
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No, apparently not.
In this video, Bob compares what he does to "the speed of light":
“Gravity is faster than light.”
Ok... where is the “gravity” traveling from and where is it going to? How can you measure the speed? Maybe you’ll turn out to be right, but if it can’t be demonstrated, what’s the point of saying it?
2c
Any occupants in the vehicles headed toward each other would be dead twice as fast as before they knew it.
after rethinking my answer, i further propose a new problem...B is s stationary object....A moves away at the speed of light, C moves away in the opposite direction at the speed of light....now what is the relationship between objects.
if fact, if the "big Bang" theory is correct....there is matter traveling in opposite directions.....therefore, if you are going 1/2 the speed of light north, and I am going 1/2 the speed of light south....we could never see each other. ever
No, I don’t think the scientists who came up with this think that at all. More than likely, it’s another case of a hyperventilating science reporter desperately trying to make his topic appeal to the public with sensationalism.
Sort of related. Amazing video where you see light travel bit by bit across a table: http://www.ted.com/talks/ramesh_raskar_a_camera_that_takes_one_trillion_frames_per_second.html
http://en.wikipedia.org/wiki/LIGO
Check up, they are already testing it. So far the results are showing that gravity waves travel at c.
Suppose I was sitting in the glassed in nose of a spaceship trsvelling at the speed of light, and turned on a flashlight?
What would be the forward speed of the light coming from the flashlight?
And yet people are still looking for “dark matter”. When all the matter in the universe is visible, the end will be nigh.
The other question is how fast are we going now?
velocity of the Earth around the Sun plus the Sun around the center of the Milky Way = 156 miles per second or 561,600 MPH.
But I cannot find values for our velocity in our galactic cluster or of our cluster’s velocity in the universe at large. Nor can I find a value for our velocity relative to the mono block.
What if we are already going faster than c?
A and C both see each other moving away from each other at the speed of light, not twice the speed of light. Space and time distort to make that happen. This isn’t just theory. It has been tested for slower moving objects that emit radiation, and in fact such distortions (albeit much smaller) had to be accounted for to make GPS work...
Actually that was how I (mis)read your first question...
The speed of light...
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